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imx6q配置pcie无线网卡遇到如下问题：
imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x1000-0x10000]
pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
pci_bus 0000:00: root bus resource [bus 00-ff]
pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff pref]
pci 0000:00:00.0: supports D1
pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
PCI: bus0: Fast back to back transfers disabled
pci 0000:01:00.0: [168c:0030] type 00 class 0x028000
pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x0001ffff 64bit]
pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
pci 0000:01:00.0: supports D1
pci 0000:01:00.0: PME# supported from D0 D1 D3hot
PCI: bus1: Fast back to back transfers disabled
pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-0x010fffff]
pci 0000:00:00.0: BAR 8: assigned [mem 0x01100000-0x011fffff]
pci 0000:00:00.0: BAR 9: assigned [mem 0x01200000-0x012fffff pref]
pci 0000:00:00.0: BAR 6: assigned [mem 0x01300000-0x0130ffff pref]
pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-0x0111ffff 64bit]
pci 0000:01:00.0: BAR 6: assigned [mem 0x01200000-0x0120ffff pref]
pci 0000:00:00.0: PCI bridge to [bus 01]
pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff]
pci 0000:00:00.0: bridge window [mem 0x01200000-0x012fffff pref]
pcieport 0000:00:00.0: Signaling PME through PCIe PME interrupt
pci 0000:01:00.0: Signaling PME through PCIe PME interrupt
pcie_pme 0000:00:00.0:pcie01: service driver pcie_pme loaded
aer 0000:00:00.0:pcie02: service driver aer loaded
However, here is what happens when the kernel seems to try and load the driver :
PCI: enabling device 0000:01:00.0 (0140 -> 0142)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at kernel/irq/manage.c:1412 request_threaded_irq+0xfc/0x124()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.28-1.0.0_ga+g91cf351 #5
[<80015638>] (unwind_backtrace) from [<80011714>] (show_stack+0x10/0x14)
[<80011714>] (show_stack) from [<8073be5c>] (dump_stack+0x7c/0xbc)
[<8073be5c>] (dump_stack) from [<8002d718>] (warn_slowpath_common+0x70/0x8c)
[<8002d718>] (warn_slowpath_common) from [<8002d7d0>] (warn_slowpath_null+0x1c/0x24)
[<8002d7d0>] (warn_slowpath_null) from [<80069ce8>] (request_threaded_irq+0xfc/0x124)
[<80069ce8>] (request_threaded_irq) from [<80420764>] (ath_pci_probe+0x198/0x2e4)
[<80420764>] (ath_pci_probe) from [<802bfa9c>] (pci_device_probe+0x74/0xc8)
[<802bfa9c>] (pci_device_probe) from [<80352a2c>] (driver_probe_device+0x110/0x24c)
[<80352a2c>] (driver_probe_device) from [<80352c38>] (__driver_attach+0x8c/0x90)
[<80352c38>] (__driver_attach) from [<80350f84>] (bus_for_each_dev+0x6c/0xa0)
[<80350f84>] (bus_for_each_dev) from [<803521e4>] (bus_add_driver+0x148/0x1f0)
[<803521e4>] (bus_add_driver) from [<80353234>] (driver_register+0x78/0xf8)
[<80353234>] (driver_register) from [<80e016d0>] (ath9k_init+0x2c/0x68)
[<80e016d0>] (ath9k_init) from [<8000889c>] (do_one_initcall+0xf8/0x154)
[<8000889c>] (do_one_initcall) from [<80dd0c54>] (kernel_init_freeable+0x138/0x1d8)
[<80dd0c54>] (kernel_init_freeable) from [<80737548>] (kernel_init+0x8/0xe8)
[<80737548>] (kernel_init) from [<8000e538>] (ret_from_fork+0x14/0x3c)
---[ end trace 6a544c6d7fd3de66 ]---
ath9k 0000:01:00.0: request_irq failed
ath9k: probe of 0000:01:00.0 failed with error -22
修改方案：
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 732f2d2..e0cd2b1 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -48,8 +48,6 @@
intc: interrupt-controller@00a01000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
- #address-cells = <1>;
- #size-cells = <1>;
interrupt-controller;
reg = <0x00a01000 0x1000>,
<0x00a00100 0x100>;
删除红色部分即可
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原文地址：http://www.cnblogs.com/liangwode/p/5409124.html
